Structure of a floating-ball valve

Abstract

An improved structure of a floating-ball valve for industrial fluid comprising a valve seat, a valve insert, a cap, a crankshaft, a float and a floating arm, wherein a valve chamber is formed at the internal of the valve seat, and together with a water inlet are pipe hole of various diameter, the lower section of the valve chamber is provided with a water outlet and an elongated slot, at the bottom of the valve seat, a pair of corresponding protruded members are provided, and each is pivotally mounted with a rocking arm, one end of the crankshaft is connected to the floating arm, the valve insert is mounted within the valve chamber characterized in that a vertical water-blocking wall is formed in between the valve chamber and the water inlet, and the valve insert consists of a metallic valve stem and a plastic valve plug, the valve plug has a front protruded rim and a rear conic face, the external wall of the protruded rim is sealable with the wall of the water inlet to form a first water-blocking structure, and the conic face is sealable with the wall hole of the water-blocking wall to form a second water-blocking structure, the crankshaft is substantially L-shaped and pivots in between the two protruded members, the top end of the crankshaft is a rocking member being inserted into a cylindrical slot, and the other end is connected to the end of the floating arm, and an opening at the end of the valve seat is provided with a plurality of external threads for mounting with a threaded cap to seal the opening.

Description

(a) Field of the InventionThe present invention relates to an improved structure of a floating-ball valve, in particular, to a floating-ball valve to be used in various type of water tank or water trough to automatically control water entrance to the tank or water level. This valve is particularly suitable to water tank for the high temperature steam producer or humidifier.(b) Description of the Prior ArtROC publication no. 31 9396 discloses a conventional floating-ball valve structure, as shown in FIGS. 1 to 4, comprising a valve seat 1, a valve insert 2, and an arm rod 31. The valve seat 1 is a pipe body with various internal diameters. A water passage is provided to the pipe body and a row of water-discharge holes 12 are provided within the large internal diameter of the pipe body. The pipe body per se is provided with a protruded member 13 and the valve insert 2 is a cylindrical mounting body mounted within the valve seat 1, and the external end of the arm rod 31 is connected to...

AI Technical Summary

Benefits of technology

Yet another object of the present invention to provide an improved structure of a floating-ball valve, wherein the combination of the valve insert and the valve seat provides an effective, two steps water blockage function.

Yet a further object of the present invention is to provide an improved structure of a floating-ball valve, wherein the end opening of the valve seat is sealed with a cap such that water stream will not eject out from the opening.

A further object of the present invention is to provide an improved structure of a floating-ball valve, wherein the angle of the floating arm can be changed if appropriate. Thus, the angle of the floating arm can be adjusted with respect to the structure of the water tank.

It is yet another object of the present invention to provide an improved structure of a floating-ball valve, wherein the water hole can be fully opened to allow smooth and rapid water flow.

Problems solved by technology

Thus, the conventional floating-ball valve is not suitable to be used in all industrial purposes.

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